Issue #6 Base simulator class and methods

Added basic class structure. Main simulation runner, basic environment structure, players, actions, counters. Simulator is running as a thread which updates with set frequency. Actions can be input and states can be read out independently. Kitchen counters of env are read in from layout text file. Simple player movement without collision detection yet.

requested review from @florian.schroeder

assigned to @fheinrich

merged

mentioned in commit 3f59cb2c